HexBrain

Acronis · Report #1256389

Subdomain takeover of main domain of https://www.cyberlynx.lu/

Validstatus
mediumseverity
$100bounty
70upvotes
12 Oct 2021disclosed

How it was found

Summary

Hi Acronis Security Team , Hope you well. I found one of your subdomains which is www.cyberlynx.lu (One of your Acquisition) is pointing towards

www.cyberlynx.lu canonical name = www118.wixdns.net. www118.wixdns.net canonical name = balancer.wixdns.net. balancer.wixdns.net canonical name = f7a0737a-balancer.wixdns.net. f7a0737a-balancer.wixdns.net canonical name = td-balancer-dc11-60-102.wixdns.net. see the following:-

{F1371299}

{F1371300}

And it is unclaimed

Steps To Reproduce:

1. Go to http://site.therealreal.com , Gives 404
2. the domain pointing towards to WIX cdn
3. Anyone can claim this subdomain

Similar report at H1:-

Please let me know if need more info , OR need for poc video Best Regards. @doosec101

Impact

An attacker can claim this subdomain by requesting a process of registering this abandoned subdomain to his name. And attacker can fully take over this subdomain and do whatever he wants. this can cause huge damage to the website's main domain as well as to the company.

I Recommend removing the Cname and DNS connecting to it.

This report was disclosed publicly on HackerOne and belongs to its author and the program. See the original